Actually there are already a couple floating around. One fascinating one: Gaia theory and the Daisyworld model. It's all around self-organising systems and the earth as a self-regulating system/organsism/something or other. James Lovelock and co. Interesting to read but sometimes feels a little too 'lets-all-just-get-along' to be real, hard-core theory. Either way, it's probably a lot more likely to be accepted than creationism, should evolutionism for some reason be disproved.
Label: Non-Sarcastic